The Aquatop Forza Sphere 20 Power Filter is a versatile, hang-on-back filter designed for aquariums up to 20 gallons. This compact yet powerful system delivers 85-gph of water flow, utilizing a 3-stage filtration process that includes mechanical, chemical, and biological media. Simply hang the filter on the back of your tank, fill the media trays with the included filter inserts and carbon cartridges, and let the ultra-quiet motor work its magic. The innovative rotating vortex skimmer, equipped with a guard for small fish, actively removes surface debris and oils, keeping your aquarium pristine. With its user-friendly design, the Forza Sphere 20 ensures low-maintenance upkeep while delivering exceptional water clarity and quality. The filter’s advanced technology removes harmful waste, toxic ammonia, and free floating debris, creating a healthy environment for both freshwater and saltwater aquatic life. Advanced 3-Stage Filtration: Equipped with spacious media trays for mechanical, chemical, and biological filtration, ensuring crystal-clear water for your aquarium. Rotating Vortex Surface Skimmer: Efficiently removes oils and debris from the water surface, promoting better gas exchange and enhanced light penetration. Ultra-Quiet Operation: Features a powerful yet silent motor with an 85-gph flow rate, ideal for tanks up to 20 gallons without disturbing your aquatic environment. Extended Warranty Protection: Comes with Aquatop’s 1+1 Extended Manufacturer’s Warranty, offering peace of mind and reliable performance.